| Item | Unit | Specification |
| Rated working voltage | V | AC380, AC400V, AC660V, AC690V |
| Rated frequency | Hz | 50/60Hz |
| Rated current | A |
horizontal busbar≤4000A;
vertical busbar≤1600 |
| Dielectric strength | V/1min | 2500 |
| Rated short time withstand current(1s) | kA | 50 |
| Rated withstand current(peak) | kA | 105 |
| Rated insulation voltage | V | 660 |
| Protection degree | IP30 | |
| Standard | as per IEC standard |
Raw materials Core slitting Core cutting
Core
stacking Insulating curing HV winding
LV winding Pouring Drying
Assembly Testing Warehouse
Test transformer Voltage ratio tester Oil dielectric strength tester
Oil dielectric resistivity tester Temperature test bench Transformer integrated test bench